Hand tool



Oct. 30,1945. R MONNLER 2,387,928

HAND TOOL v Filed Jan. 27, 1944 2 Shets-Sheet 1 INVENTOR. eussano/v/v/m.

0a. 30, 1945 R. MONNIER 2,387,928

\ HAND TOOL Filed Jan. 27, 1944 2 Sheets-Sheet 2 15 10 I@WGY@K@INVENTOR. 2053a MO/V/V/E/Q.

Patented Oct. 30,1945 7 w f g 2,387,928

UNITED STATES PATENT OFFICE HAND TOOL Russel Monnier, Detroit, Mich.

Application January 27, 1944, Serial No. 519,845

3 Claims. (CI. 81-51) This invention relates to hand tools and hassecurely grasping the terminal during the wire particular reference to aspecial tool for entering inserting operation. the ends of a strandedwire into an aperture. It Referring now more particularly to the drawisparticularly designed for entering stranded ings, it will be understoodthat in the embodiment wire into the hole of a stake-on lug or terminal.herein disclosed, my improved device consists of In utilizing certaintypes of lugs or wire tera pair of jaws l0 and II, having complementaryminals it is very difficult to insert the stranded handles 12 and I3,which are pivoted at M, to wire in the aperture of the lug, preparatoryto the function in the manner of a pair of pliers. The stakingoperation, particularly is such insertion device is provided on one side(Figs. 1 and 3) with difiicult where the aperture is not exactly round acircular bore having inclined side walls IE. or where there is someinterior obstruction in the The device is provided on the opposite side(Figs. hole, as is the case when a lug is used as shown 2 and 3) with acircular bore l1, having substanin the drawings. tially straight wallsI8. The bores l5 and H In certain applications the lugs "or terminalsare communicate with one another, but the bore I1 is secured to thefixtures before the latter are wired, 15 larger than the reduced end l9of the bore l5,

and often times they are secured in inacessible and is ofi center withrespect to the center of the places, where it is impossible to insertthe wires, bore I5 as shown in Figs. 2 and 3 to accommowithout damagingthe ends, or displacing some of date the special lug or terminal 20,which is prothe fine strands of wire. vided with a central passageway2|, shown in It is therefore an object of the invention to dotted lines,which passageway 21 is offset with provide a tool which will enable theoperator to respect to t longitudinal axis of the 111 0.

efiiciently and quickly enter the stranded wire in The bore H isdesigned to accommodate and the hole. firmly hold the lug 20, while thestranded wires Another object of the invention is the provision 22, arebrought into position for e try into the of a tool of the characterdescribed which is 25 bore l5 and hence into the passageway 2| of theadapted to automatically bring the multiple ends terminal 20. Theinclined walls l6 of the bore 15 of a stranded Wire into strictconformation with 7 guide the individual strands of the wire 22 comthehole to be entered. pressing them into a reduced circumference forAnother object of the invention is the provision fi a ent y into the opning of t e terminal 20, of a tool of the character described, which is0 as shown in Fig. after w ch the term nal 20 adapted to securely graspthe lug while the I may be secured to the wire 22. by ng, solderstrandedwire is being inserted in its aperture. s. weldin Other u e means- Theforegoing objects and other advantages of In Fig. 5 I have illustrated amodified form of the invention will become more apparent as the v ce werein a plurality of ope gs are p description proceeds, reference beingmade from v t a mm v r iz f lu s and time to time, to the accompanyingdrawings, in w1res.

which: In Fig. 7 I have illustrated a modified form of Fig. 1 is a sideelevation of a device embodying ev ce in wh ch the jaw II, is machinedout as my invention. at 23, to accommodate a spring detent 24, whichFig. 2 is a reverse side elevation of the device 40 s Secu ed t ereto bywelding or other suitable illustrated in Fig. 1. means. The springdetent 24 is provided with an Fig. 3 is an enlarged fragmentary detailtaken end member 25, which has a semi-circular slot substantially on theline 3-3 of Fig. 1. p 26, adapted to contact the outside wall of the lugFig. 4 is a top 1an view of the device illustrated 20, to firmly holdthe s me in p i i uring the in Fig. 2, with elements to be worked uponin operation of inserting the wire 22. This spring adjusted position.detent holding element automatically compen- Fig. 5 is a modified formof the device illussates for any wear in the device, which might tratedin Fig. 1, with a plurality of openings allow the terminal 20 to fitloosely.

adapted to accommodate various size elements. Having described myinvention, what I claim Fig. 6 is a view similar to Fig. 4, with partsand desire to secure by Letters Patent is:

broken away and showing the position of the ele- 1. A device of thecharacter described comprisments worked upon after the insertion of theing a pair of jaws, means in said jaws for securely stranded wire in theterminal. holding a wire terminal, and means in said jaws Fig. 7 is amodified form of the device illustrated for assisting the endwise entryof a stranded wire in Fig. 2, showing the use of a spring detent forinto an opening in said terminal, both said means 3. In a device of thecharacter described the combination of a pair of co-acting jaws, eachjaw having cut-out portions on their inside surfaces, the cut-outportions being arranged to form communicating bores, one of which isstraight and the other of which is tapered, at least one of said jawsbeing provided with a spring member adapted to restrict the area of oneof said bores;

RUSSEL MONNIER.

